Hypersonic Technology Demonstrator Vehicle

Introduction

India is pushing ahead with the development of ground and flight test hardware as part of an ambitious plan for a hypersonic cruise missile.

The Defense Research and Development Laboratory’s Hypersonic Technology Demonstrator Vehicle (HSTDV) is intended to attain autonomous scramjet flight for 20 sec., using a solid rocket launch booster. The research will also inform India’s interest in reusable launch vehicles. The eventual target is to reach Mach 6.5 at an altitude of 32.5km. (20mi.).

Initial flight testing is aimed at validating the aerodynamics of the air vehicle, as well as its thermal properties and scramjet engine performance. A mock-up of the HSTDV was shown at the Aero India exhibition in Bangalore in February (see photo), and S. Panneerselvam, the DRDL’s project director, says engineers aim to begin flight testing a full-scale air-breathing model powered by a 1,300-lb.-thrust scramjet engine in near future.

Hypersonic speed

In aerodynamics, a hypersonic speed is one that is highly supersonic. Since the 1970s, the term has generally been assumed to refer to speeds of Mach 5 and above.

The precise Mach number at which a craft can be said to be flying at hypersonic speed varies, since individual physical changes in the airflow (like molecular dissociation and ionization) occur at different speeds; these effects collectively become important around Mach 5. The hypersonic regime is often alternatively defined as speeds where ramjets do not produce net thrust.

Characteristics of flow

While the definition of hypersonic flow can be quite vague and is generally debatable (especially due to the lack of discontinuity between supersonic and hypersonic flows), a hypersonic flow may be characterized by certain physical phenomena that can no longer be analytically discounted as in supersonic flow. The peculiarity in hypersonic flows are as follows:

Strays (Jane's Addiction album)

Strays is the fourth album, and third full studio album by American rock band Jane's Addiction, released on July 22, 2003 on Capitol Records. Released 13 years after Ritual de lo Habitual (1990), the album marks the band's longest gap between full studio albums, although the group had recorded and released a handful of new songs 6 years earlier on the compilation album Kettle Whistle (1997). Strays is the first album to feature bassist Chris Chaney. Regarding the decision to record a new studio album after such a long hiatus, drummer Stephen Perkins stated that the band had already completed two reunion tours performing old material, and that Jane's was ready for "a new challenge."

Upon its first week of release, the album sold 110,500 copies in the United States and is currently certified Gold. The single, "Just Because", was nominated for a Grammy Award in 2004.

Background and recording

According to drummer Stephen Perkins "it all started around March or April 2002 with Bob Ezrin producing a Porno for Pyros track for the movie Dark Blue, an incredible song called "Streets of Fire" which was just epic. That segued into the Strays project."

Land vehicles are classified broadly by what is used to apply steering and drive forces against the ground: wheeled, tracked, railed or skied. ISO 3833-1977 is the standard, also internationally used in legislation, for road vehicles types, terms and definitions.

History of vehicles

The oldest boats found by archaeological excavation are logboats from around 7,000–10,000 years ago,

a 7,000-year-old seagoing boat made from reeds and tar has been found in Kuwait.

There is evidence of camel pulled wheeled vehicles about 3000–4000 BCE.

The earliest evidence of a wagonway, a predecessor of the railway, found so far was the 6 to 8.5km (4 to 5mi) long Diolkos wagonway, which transported boats across the Isthmus of Corinth in Greece since around 600 BC. Wheeled vehicles pulled by men and animals ran in grooves in limestone, which provided the track element, preventing the wagons from leaving the intended route.

Hypersonic Technology Demonstrator Vehicle

Introduction

India is pushing ahead with the development of ground and flight test hardware as part of an ambitious plan for a hypersonic cruise missile.

The Defense Research and Development Laboratory’s Hypersonic Technology Demonstrator Vehicle (HSTDV) is intended to attain autonomous scramjet flight for 20 sec., using a solid rocket launch booster. The research will also inform India’s interest in reusable launch vehicles. The eventual target is to reach Mach 6.5 at an altitude of 32.5km. (20mi.).

Initial flight testing is aimed at validating the aerodynamics of the air vehicle, as well as its thermal properties and scramjet engine performance. A mock-up of the HSTDV was shown at the Aero India exhibition in Bangalore in February (see photo), and S. Panneerselvam, the DRDL’s project director, says engineers aim to begin flight testing a full-scale air-breathing model powered by a 1,300-lb.-thrust scramjet engine in near future.

Latest News for: hypersonic technology demonstrator vehicle

An expert in launch vehicles, Dr. Sivan said the space agency was also working towards developing a hypersonic reusable launch vehicletechnologydemonstrator that should be ready in a year or two ... We are having a winged vehicle so that it can return to land or shore ... To do this, many technologies are to be mastered ... In the 2016 flight, one such technology was demonstrated....

... be demonstrated. ... Reusable LaunchVehicleTechnologyDemonstratorHypersonicExperiment (RLV-TD HEX1) wherein the hypersonic aero-thermo dynamic characterization of winged re-entry body along with autonomous mission management to land at a specified location and characterisation of hot structures were demonstrated during the first flight on Monday....